Actually this is not true. All Disney owned places give out free water. If they are leased and not owned by Disney they are not required to give free water. I know this from my travels of getting hot water, the pastry/coffee carts all over Disney are not owned by Disney and will not give free water.
Also, I believe that they will get it programmed so that if you bought the cup, you can get water.
I really think everyone is taking this to the extreme. It is a benefit you have had for 2 years and now they are taking it away because it is too costly and is making the lines longer. If the cart lines weren't long 2 years ago because of getting free water, they still won't be today.